Apparatus for manufacturing glass articles.



No.820,477. v PATENTED MAY 15, 190a. J. H. GROSXEY. APPARATUS FOR MANUFAGTURING GLASS ARTICLES.

APPLIGATION FILED JUNE 10, 1904. RENEWED 001210. 1905.

s snsmvsnizs'r mu. UZUfli/L tAl'tiN'i'fiU MAY lb, 1906. J. H. GRUSKEY. APPARATUS FOR MANUFACTURING GLASS ARTICLES.

APPLIUATION FILED JUNE 10.1904. RENEWED 0011015305.

3 SHEETS-SHEET 2,

PATENTED MAY I5, 1906.

a. u. CROSKBY. APPARATUS FOR MANUFACTURING GLASS ARTICLES.

APPZIGATIOR FILED JUNE 10, 1904. RENEWED OUT. 10, 1905.

3 SHEETS-SHEET 3 UNITED STATES PATENT OFFICE.

JOHN n. CROSKEY, or rlrrssoae, PENNSYLVANIA, ASSIGNOR T neonnssa GLASS COMPANY, or PITTSBURG, PENNSYLVANIA, A CORPORATION or PENssY vANm.

APPARATUS FOR MANUFAOTLQHING GLASS ARTICLES- hatentecl may 15, 1906.

' Application filed June 10, 1904. Renewed October 20, 1906. Serial No. 232,168.

To all whom it may concern:

Be it known that I, JOHN H. Onosnnr, a citizen of the United States, residing at Pittsbur in the county of Allegheny and State of ennsylvania, have invented certain new and useful Improvements in Ap aratus for Manufacturing Glass Articles, 0 which the following is a specification, reference being had therein to the accompanying drawings, forming part of this specification, in which Figure 1 is a view in vertical sectional ele vation of my improved molding apparatus for plastic material. Fig. 2 is a artial similar view showing the upper-m0] fplunger depressed. Fig'. 3 is a p an view 6 the rotst ing table, illustrating the molds and the different steps of theoperation. Fl .4 is a de-' tail view of one of the screw-spind es rotating wheels. in engagement with the stationary pins. Fig. 5 18 a vertical sectional view indicated by tlie line V V of Fig, 1. Fig. 6 issfvertical sectional detail view of one of the molds and the ratchet-controlled plunger for forming the threaded socket. Fig. 7 is a sectional detail view of the ratchet detached.

' Fig. 8' is a horizontal sectional view on the line V111 V111 of FiF. 6. s

My invention re ers to improvements in apparatus for forming articles of a plastic nature, as glass, and is particularly desi nod for the manufacture of insulators for to egraph or other wires.

The invention has in view the rapid-economical manufacture of such devices of uniform character by means of mechanism adapted to press the article in suitable molds,

together with a vertically-reeiprochting threaded plunger adapted to he raised into suitable position and held there during presslug o oration arid to be removed by unscrew,

Inge rthe article is formed, so as to leave a threaded interior cavity and allow the fin-- ished insulator to be removed from the mold.

1 upon which- Referring now to the drawings illustrating the Invention 2 represents only suitable base e structure am operative elements comprising myinvention are mounted.

3 is a ball-race mounted upon the structural framework 1, provided with an annular groove adapted to support a series of bear- 1iig+balls as shown, upon which balls rests a turn-tahle5, adapted to support and carry the molds. These molds are of the usual well-known construction, comprising a basemold 6, u on which are mounted the hin ed sides of (ivided molds 7, as will be rea ily understood, and these molds are adapted to be intermittently rotated around upon the carrier 5, so as to bring each mold beneath a pressin plunger 8 at the proper place and time. he table 5 is intermittently actuated by means of a spring-controlled pawl or latch 9, mounted in the outer end of a swinging arm 10, actuated by pitman' 11 from crank-disk 12 on the upper end of shaft 13, driven by gearin 14 from main shaft 15. The operation 0 this construction will be readily understood from Fi s. I and 3, and the turntable is rotated t erehy between each period of rest occurring during back travel of the pawl 9. The plunger Sis also reciprocated and pressed downwardly into with the stem 18 of plunger 8 by suitable links 19 and any convenient intervening cushioning device, as a spring 20. Lever 17 is pivoted at 21 on the upwardly-extending standard 22, which also provides a bearing for the longer-rod, the lever extendin backwar y and engagin by a termina roller with the groove 23 o a cam 24, mounted on the 11 per end of a vertical shaft 25 15 as clearly shown m Fig. l.

. he exterior ortions of the insulator are entirely forined 8, and for the urpose of providing the internalbr-threaded cavity of the insulator I provide. a vertically-reciprocating plunger 27, hav' a threaded terminal 28, the lower portion 0 the plunger being rovided with annularly arrangl'etl screw rate et-teeth 29. These lat oath of the plunger are engaged by,a ratchetarm 30, pivoted at 3i and provided with oneor more teeth 32., which engage the spiral ratchet-teeth 29 and prevent downward travel of the plunger except when reversed, as hereinafter described. The plunger, as

and asses downwardly throu h a depending bras et 33, to which the rate et-arrn is pivoted, as clearly shown. The longer 27 at the proper time is freely raisecl hy means of an independent spindle 34, which in turn is raised by a wiping-cam 35, mounted or se and driven t ough gearing 26 on main shaft y molds Sand? and plunger the mold 7 by means of a lever 17, connected shown, has a hearing in the center of mold'fi cured upon a disk 36 at the outer end of shaft 15. 'lh is Wiper-rim] 35 is so arranged that it will gt'iulunllv raise the lilling-sl1orn 34, which abuts against the lower end of plunger 27, raising it to the desired height. the wiper-- cam 35 then quickly releasing the stem by riding beyond the hoaringd'ollrr :47, secured to the stem, rillowinp it to sndilcnlv d rop, us clearly shown in Fig. 5. in such miscil po ition the glass is l'o'rincd nrournl ilnthreiulcd end of the plunger, re ultingin the linishod insulator. For the purpose ol i'wnoving the threaded plunger it is provided will: it star or toothed wheel 38. which in; n series of stationery pins or ruck-abut; rents Jill iin-- medintely upon further roti'ition til tlu tiiliic. cousin; the spindle to he rotated and to travel in a dinvnwiird direction during sin h rotation by reason of the enemy nent of the threaded terminal 28 with the lll'lilliliifil still in the mold and the spiruliwiornml ratchet teeth 2.) in engagement with the pivoted riltrhvf-tfltlll 32.. This oprrniEon continues until the threaded terminal has been entirely withdrnwi'i, when the insulator is unloved by opening the mold in the usual iocnncr.

The operation will be readily (lULltl'HlfitXl from the foregoing description, and while the machine is particularly adopted to the manufacture of insulators it is obvious that other devices may he made oi :1 similar nu titre/or it may he adopted to other forms wherein it is desirable to form at threaded cavity.

Changes and variations may he made in its design, construction, or proportions by the skilled mechanic, and all such are to be considered as within the scope of the following claims.

hat i claim is 1. Apparatus for forming articles of glassware consisting of it rotatable mol l-cerrier provided with a circularly--nrrinl t-d series of molds, a. pressing-plunger arranged to coop erntc with said molds in rotation, and it series of oppositely-disposed threaded plungers mounted. in the mold carrier, with an independent plungerraising spindle and means for unscrewing the threaded. plungers operated by rotation of the mold-carrier, substantially set forth.

2. Apparatus for forming articles of glassware consisting of n rotatable mold-carrier provided with n circularty-arranged series of molds, a. pressing-plunger arranged to 0061)- crate with said molds in rotation, and a series of oppositelvdisposed threaded pl'ungcrs mounted in the mold-carrier, with means for unscrewing the threaded plungers operated by rotation of the mold-carrier, means for moving the pressingqilunger vertically, and en inde iendent plunger-raising spindle, substantially its set forth.

3. Apparatus for forming articles of glass were eonsisting'ol a rotatable 1nold-carrier provided with a circularly-art'sngcd series of l l l l molds, it pressing-plunger arranged to coop-- r-rntc with said molds in rotation, and tl so ries of oppositely-disposcd threaded plungcis mounted in the llltllthflttlllt'l, with nicanst'or unscrewing the throitdcd pioneers operated by rotwtion oi the inold'rurrier, IIH'HIW for nlovinp the iressinn-plunger vertic-nllv', an independent plunger rnisiiig spindle, and means For intermittently riiti'ttinp the mold i-nrrier, substantially as sci-t forth.

4. 'llic coinl'iinntion with an upper verti "nlliwiiiorztling yn ssin r ilnnger and a rota tn lil \'-triivcliin; mold of a. lower piungerincon pointed with the mold having a threiuled ter mine] and provided with an unsi'rcwii'ig die vii'o, un ons adapted to engage suid device ind heroine operative upon rotntorytritvcl oi the mold, and an independent relatively stationary plunger-raising spindle adapted to shut underneath the plunger, substantially as stfl l'orth.

5. The eoinhinntion with a rotatnlah -tr2wcling mold, of a traveling verticellvdnovnhi spindle provided with a threaded terin niil having spiralratchet-teeth, an arresting-pew an independent raising-spindle, and meons For unscrewing the threaded terminal of the first spindle from the molded article, substan tiiilly as set forth.

(5. The combination with a non-traveling pressing-plunger and a. rotatahly-trnveling mold, of a traveling verticully-movable spindie provided with a threaded terminal and having spiral ratchet-teeth, an arresting pawl, an independent raising-spindle, and means for unscrewing the threaded terminal of the first spindle from the molded article, substantially as set forth.

7. In apparatus for forming articles of glassware, the combination of a rotatable mold-carrier, a series of molds mounted thereon, a pressing-plunger, a series of rotateble threaded plungers mounted on the mold-enrrier, an independent raising-spindle therefor, and means for rotating the threaded plungers to unscrew from the molded article, 0 erated by rotetion of the mold-carrier, su stnntizilly as set forth. I

8. In apparatus for forming articles of glassware, the combination of a rotatable mold-carrier, a series of molds mounted there on, a ressing-plunger, a series of rotatable thread ed plungers mounted on the mold-car rierv provided with toothed wheels, an inch?- pendent raising-spindle for the threaded plungers, and a series of stationaryrack-abutmerits adinte'd to engage the wheel of the threaded plungers to unscrew them from the molded articles, substantially as set Forth. l

9. In apparatus for forming articles of lasswar the combination of a foundatiom Tame, alrotatable mold-carrier mounted thereon. provided with a series of molds, a ver tic-ally-moncble ressingplunger and actuating means there or mounted on the frame, a

, plunger dependent uponmovement of the moldearner, substantiall as set forth.

"10. In apparatus for orming articles of glassware, the combination of a foundation,-

frame, a rotatable mold-carrier mounted thereon provided with a series of molds, a vertically-movable 1pressingg-plunger and actuating means there or mounted on the frame, a vertically-movable threaded plunger mounted in the mold-carrier and projecting upwardly into the mold-cavity, an independent raising-spindle for the threaded plunger and actuating means therefor mounted in the frame, and means for unscrewing the threaded plunger dependent upon movement of the mold-carrier, with means for intermittently partially rotating the mold-carrier, substantially as set forth.-

11. In ap aratus for forming articles of lassware, the combination of a stationary ame, a rotatable mold-carrier mounted thereon provided with a series of molds, a

pressing-plunger and ee'tnat'fng means thereor monntedpn the frameila series of 161M130 oally movabl e rotating t reeded plungers mounted in the mold-carrier end provided with toothed wheels, an independent raisingspindleand actuatirfi means therefor nloflnted in the frame, "m

toothed wheels or the plunger u on movement of the mold-earner to wit draw the plungers, substantially as set forth.

12. Theeombinationwitharotatablemoldcarrier and a mold thereon, of a verticallyrnovable threaded plunger rejecting into the mold-cavity and provided with annularlyarranged screw ratchet-teeth and a toothed a series of stationary 5 rack-abutments adapted to engage the actuating-wheel, a, dependent bracket, a piv- 5 oted pawl, an inde endent raising-spindle, and a series of mo -abutments adapted to engage the toothed wheel, with means for im erting motion to said parts, substantia 1y )5 set forth.

In testimony whereof I afllx my signature in presence of two witnesses.

JO IN H. CROSKEY W1tnesses:

R. H. MCLARN, C. M. CLARKE. 

